Drone flies 5 sec on takeoff and crashes, video and dupm added, has anyone encountered this problem?

[foggy mountain]

frame - 7 inches
motors - emax 2807 1300kv
controller - SpeedyBee F405 V3
ESC - JHEMCU RuiBet 55A
5,8gz receiver - AKK FX2-Dominator
915Hz receiver - BAYCK ExpressLRS 915MHz
propellers - HQProp 7X3.5X3

[ebon gorge]

Any blackbox log?

[foggy mountain]

@ebon gorge Not yet, and what blackbox debug mode is needed to figure out what the cause?

[foggy mountain]

@ebon gorge can u help, please?

[ebon gorge]

oh sorry

uh

log at 2Khz, with gyro scaled

[foggy mountain]

@ebon gorge here backbox

[craggy nymph]

According to the blackbox, the quad is disarming

[foggy mountain]

What could be cause of disarm if no one presses arm switch?

[craggy nymph]

I'm not 100% sure at the moment. Do you have DVR footage? Were there any warnings in the OSD when it disarmed?

[foggy mountain]

No, there's nothing like that, and unfortunately there's no record of it either

[foggy mountain]

I noticed something, maybe the problem is that the red one?

[ebon gorge]

Not really, that's just antigravity settings that may not be updated as valid in the explorer

[foggy mountain]

Any idea what might be causing the disarm?

[ebon gorge]

Hard to say, DVR would also help in this situation

Maybe a failsafe stage? Not quite sure

[foggy mountain]

What should I select in osd to see the possible cause?

[ebon gorge]

You should hopefully have the warning element enabled, it is by default

[foggy mountain]

Okay, I'm gonna try that now

[untold cosmos]

Warnings like failsafe and runaway are usually listed before disarm. I think the quad is actually just seeing a disarm signal.

Is your arming channel on aux 1?

[foggy mountain]

yes on aux 1

[untold cosmos]

Is your switch wobbly at all?

If you open channel monitor and shake your radio or something

While in the armed position

[foggy mountain]

Good guess, I'll check

[untold cosmos]

I'm drawin a blank but the box is saying you disarmed

[craggy nymph]

I would try arming while plugged into Betaflight Configurator, watching the Receiver or Modes tab

I would be looking to see if the signal on Ch5/Aux1 stays high or if it drops again after a few seconds

[foggy mountain]

@untold cosmos @craggy nymph Thanks guys, the problem was with the aux 1, it's broken

[craggy nymph]

How is it broken?

[foggy mountain]

Switcher is broken, most of all it's like this from beginning because the remote is new

[craggy nymph]

I'd contact the original seller, see if they are willing to work with you since it's a new product